<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xmlns:th="https://www.thymeleaf.org">
<head>
    <title>Index Page</title>
</head>
<body>
<h1>hello word!!!</h1>
<p>this is a html page</p>
<form th:action="@{/user/logout}" method="post">
    <button type="submit">logout</button>
</form>
</body>
</html>